Muscle ache caused by participating in sports is generally called "sports muscle injury", which is caused by the destruction of the fine structure of muscle fibers due to repeated exercise. It is different from muscle strain and contusion caused by strenuous exercise, and is also called "delayed muscle ache". Generally, it appears after 24 hours of exercise, reaches the peak within 24 ~ 72 hours, and the pain symptoms basically disappear after a few days. When muscle aches, the main symptom is muscle stiffness, which hinders exercise. Tenderness exists in the thixotropic muscles, so pay attention to: 1. Warm-up activities should be sufficient to gradually warm up muscles, promote blood circulation and reduce muscle soreness after exercise. 2. After exercise, actively stretch tendons, relax muscles, make blood flow unobstructed, and help metabolic wastes to be excreted as soon as possible, which can reduce soreness. 3. Apply camphor oil and turpentine locally before, during and after exercise to relieve pain. 4. Hot compress and massage after exercise can also inhibit the conduction of soreness. 5. Applying local coolants to divert excitement can play a role in psychological relaxation and relieve pain. As long as you keep exercising, after a period of adaptation, muscle soreness will naturally disappear. If you increase the load and intensity of your practice, there will be new stimulation and muscle aches, but the symptoms will be obviously lighter than last time. Therefore, exercise should be carried out step by step according to your own actual situation, so as to achieve the purpose of physical fitness and fitness. However, pay special attention. If your running is not muscle pain, but bone and joint pain, you should go to the hospital for consultation. Generally speaking, exercise should focus on muscle exercise, and then it is not suitable for leg lifting and running and jumping, which is tantamount to accelerating the wear of articular cartilage. The last treatment can only be joint replacement through surgery.